2 * QEMU Crystal CS4231 audio chip emulation
4 * Copyright (c) 2006 Fabrice Bellard
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
25 #include "hw/sysbus.h"
29 * In addition to Crystal CS4231 there is a DMA controller on Sparc.
34 #define CS_MAXDREG (CS_DREGS - 1)
36 #define TYPE_CS4231 "SUNW,CS4231"
38 OBJECT_CHECK(CSState, (obj), TYPE_CS4231)
40 typedef struct CSState {
41 SysBusDevice parent_obj;
45 uint32_t regs[CS_REGS];
46 uint8_t dregs[CS_DREGS];
49 #define CS_RAP(s) ((s)->regs[0] & CS_MAXDREG)
51 #define CS_CDC_VER 0x8a
53 static void cs_reset(DeviceState *d)
55 CSState *s = CS4231(d);
57 memset(s->regs, 0, CS_REGS * 4);
58 memset(s->dregs, 0, CS_DREGS);
59 s->dregs[12] = CS_CDC_VER;
60 s->dregs[25] = CS_VER;
63 static uint64_t cs_mem_read(void *opaque, hwaddr addr,
77 ret = s->dregs[CS_RAP(s)];
80 trace_cs4231_mem_readl_dreg(CS_RAP(s), ret);
84 trace_cs4231_mem_readl_reg(saddr, ret);
90 static void cs_mem_write(void *opaque, hwaddr addr,
91 uint64_t val, unsigned size)
97 trace_cs4231_mem_writel_reg(saddr, s->regs[saddr], val);
100 trace_cs4231_mem_writel_dreg(CS_RAP(s), s->dregs[CS_RAP(s)], val);
103 case 25: // Read only
107 val |= CS_CDC_VER; // Codec version
108 s->dregs[CS_RAP(s)] = val;
111 s->dregs[CS_RAP(s)] = val;
122 s->regs[saddr] = val;
125 s->regs[saddr] = val;
130 static const MemoryRegionOps cs_mem_ops = {
132 .write = cs_mem_write,
133 .endianness = DEVICE_NATIVE_ENDIAN,
136 static const VMStateDescription vmstate_cs4231 = {
139 .minimum_version_id = 1,
140 .fields = (VMStateField[]) {
141 VMSTATE_UINT32_ARRAY(regs, CSState, CS_REGS),
142 VMSTATE_UINT8_ARRAY(dregs, CSState, CS_DREGS),
143 VMSTATE_END_OF_LIST()
147 static int cs4231_init1(SysBusDevice *dev)
149 CSState *s = CS4231(dev);
151 memory_region_init_io(&s->iomem, OBJECT(s), &cs_mem_ops, s, "cs4321",
153 sysbus_init_mmio(dev, &s->iomem);
154 sysbus_init_irq(dev, &s->irq);
159 static Property cs4231_properties[] = {
163 static void cs4231_class_init(ObjectClass *klass, void *data)
165 DeviceClass *dc = DEVICE_CLASS(klass);
166 SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
168 k->init = cs4231_init1;
169 dc->reset = cs_reset;
170 dc->vmsd = &vmstate_cs4231;
171 dc->props = cs4231_properties;
174 static const TypeInfo cs4231_info = {
176 .parent = TYPE_SYS_BUS_DEVICE,
177 .instance_size = sizeof(CSState),
178 .class_init = cs4231_class_init,
181 static void cs4231_register_types(void)
183 type_register_static(&cs4231_info);
186 type_init(cs4231_register_types)